Kimi vs Claude: Which One Should You Actually Use?

Kimi vs Claude is much closer than it was. On the Artificial Analysis Intelligence Index, Anthropic's Claude Opus 5.5 scores 57.6 at its maximum reasoning setting, and Moonshot AI's Kimi K3.1 Pro, released on 23 October 2026, scores 55.1. Its predecessor, Kimi K3, scored 43.6. And the Claude app does not open on Opus at maximum. Free and Pro both default to Claude Sonnet 5.5 at Medium effort, which scores 40.8.

So the useful question is not which lab has the stronger flagship. It is what you get on the plan you would actually pay for, at the settings you would actually use. This guide maps that, then compares price, how each company limits your usage, files and agents, privacy and the Mac apps. Every price and plan detail comes from Moonshot's and Anthropic's own pages, and every score from Artificial Analysis, checked on 2 October 2026 and re-checked on 24 October after the Kimi K3.1 Pro launch.

The Key Takeaways

• Default chat: Claude Free and Pro open on Sonnet 5.5 at Medium effort, 40.8 on the Intelligence Index, far below Kimi K3.1 Pro at 55.1 and a little below the older Kimi K3 at 43.6.
• One click up: Pro lets you switch to Opus 5.5, which scores 51.2 at Medium and 57.6 at max. Only the max setting beats Kimi K3.1 Pro, and Moonshot has not said which Kimi plans get K3.1 Pro.
• Price: Kimi's paid plans run $19, $39, $99 and $199 a month. Claude's run $20 (or $17 billed yearly), $100 and $200.
• Privacy: Claude lets you choose whether your chats train its models. Kimi's international service uses your content for training and has no settings switch. To opt out you email Moonshot, and that only covers future training.
• Mac: Claude's desktop app runs on Intel and Apple silicon Macs from macOS 11. Kimi's needs Apple silicon and macOS 12, and its Work agent is still in beta.

Kimi vs Claude: The Short Answer

For most people, Claude is still the better choice, but no longer because Kimi’s model is weaker. At around $20 a month, Claude Pro gives you Opus 5.5, which still tops Kimi K3.1 Pro at maximum effort. You can keep your chats out of training, ordinary chat does not spend credits, and the app runs on more Macs. The catch is that Claude opens on Sonnet 5.5, so switch to Opus for anything hard.

Kimi is the better choice for a narrower, growing group. Pick it for three things. A near-frontier model, K3.1 Pro, that tops the independent Terminal-Bench 4.0 coding test. Open weights you can download and run yourself, with the K3.1 Pro weights promised by 4 November. Or an agent that splits one big research job across up to 300 sub-agents.

What Kimi and Claude Actually Are

Kimi is Moonshot AI's assistant, with open weights

Kimi is the chat app and agent platform from Moonshot AI, one of China's leading AI labs. Its flagship, Kimi K3, is a mixture-of-experts model with 2.8 trillion parameters, 104 billion of them active per token. Its context window is 1,048,576 tokens, according to its Hugging Face model card. Moonshot publishes the full weights under its own Kimi K3 license. Our Kimi K3 deep dive covers the model itself. On 23 October 2026 Moonshot released a post-trained successor, Kimi K3.1 Pro, which is now its flagship. It keeps K3’s size and context window, and its weights are promised by 4 November.

In the Kimi app, a switch above the message box picks the model. Moonshot’s help centre still describes three choices: K2.6, the fast model for quick questions, K3 with Low, High and Max thinking settings, and K3 Swarm, which spreads large search and batch jobs across many agents at once. Moonshot says Kimi K3.1 Pro is rolling out on Kimi.com and the Kimi apps from 23 October, and its plan pages list the faster K3.1 Pro Highspeed on Pro and above. It has not said whether Free and Plus get the standard K3.1 Pro, so check the picker before you pay. Web search, a URL fetch tool, image search, a Python sandbox and memory are built in.

Claude is Anthropic's assistant, with a model per plan

Claude is Anthropic's closed assistant, and the plan you pay for decides which models you can pick. Free gets Anthropic's Sonnet and Haiku models but not Opus. Pro and Max add Opus. Sonnet 5.5 is the default model on Free and Pro, according to Tom's Guide. It replaced Sonnet 5, which Anthropic had made the default on both plans in June. The top model, Claude Fable 5.1, costs extra usage credits on Pro and is included on Max up to half of the weekly limit.

Anthropic's current models are new. Claude Opus 5.5 launched on 22 September 2026 and Claude Sonnet 5.5 on 28 September. In the Claude apps you also choose an effort level, from Low to Max, and Anthropic sets Medium as the default in its apps and in Claude Code.

Which Model You Actually Get on Each Plan

Claude Free and Pro answer with Sonnet 5.5 by default, Pro and Max can switch to Opus 5.5, and Kimi plans pick between K2.6, K3 and, where Moonshot has rolled it out, K3.1 Pro. The effort setting moves the scores as much as the plan does. The table uses the Artificial Analysis Intelligence Index v4.3.2, which combines ten evaluations of reasoning, knowledge, coding and long-document work. We read it on 24 October 2026.

The default-setting catch

On default settings, Kimi now has the stronger model on paper. Out of the box, Claude Free and Pro both answer with Sonnet 5.5 at Medium, which scores 40.8. That is a little under K3 at Max and far under K3.1 Pro at 55.1. Artificial Analysis publishes only one K3.1 Pro score, so lower Kimi settings may land closer to Sonnet.

The gap opens when you change one setting.

On Pro, picking Opus 5.5 lifts the score to 51.2 at the same Medium effort, well above K3 but still below K3.1 Pro. Only Opus 5.5 at Max (57.6) and Sonnet 5.5 at Max (56.0) score higher than Kimi K3.1 Pro, and higher effort uses your Claude limit faster. On Kimi, the stronger models spend credits faster too.

To switch in the Claude app, click the model name next to the send button and pick Opus 5.5. The Effort setting sits in the same menu.

One caveat keeps this honest. A single index is one view, and Artificial Analysis rescales it every few weeks, so treat these as a dated snapshot. Our best AI models hub tracks the current leaders across several boards.

Kimi vs Claude: Prices and Plans

On price, the two line up almost tier for tier, with Kimi adding a $39 step that Claude does not have. Kimi's prices come from Moonshot's membership pricing page and Claude's from Anthropic's pricing page and help centre, all in US dollars before tax.

Two plan details change the value. Kimi's 1 million token chat window is limited to Max and Ultra. Claude's Max plans are monthly only, while Pro also comes yearly. Our Kimi pricing guide has the full Kimi rate card, and our Claude Pro vs Max comparison covers when Max is worth it.

How Kimi's credits work

Kimi meters everything through one shared pool of credits. Chats with K2.6, K3 and K3.1 Pro, Agent Swarm, Slides, Kimi Code and the desktop agent all draw on it, billed by the tokens each task uses. Moonshot's help centre says plainly that K2.6 in chat consumes credits too.

The free pool is small. Moonshot's own rough guide for free users puts one deep research report at 5 to 10 percent of the allowance and a simple slide deck at 1 to 2 percent. Credits refresh monthly on your subscription date, and unused ones expire. Kimi Code also has its own rolling five-hour limit. On the plans Moonshot launched in October there is no weekly Kimi Code limit, while the older Moderato to Vivace plans keep one.

How Claude's limits work

Claude does not use credits for ordinary chat. Each plan has a usage limit that resets every five hours, and paid plans add a weekly limit across all models. Anthropic does not publish a message count, because long chats, big files and higher effort all use more of the allowance. Our guide to whether Claude is free covers what the Free plan includes.

Max 5x and Max 20x give five and twenty times Pro's per-session usage. On paid plans you can also switch on usage credits, which let you keep working past the limit at API rates. Our guide to Claude usage limits explains how the windows interact.

Files, Documents and Agents

Claude folds file work into the chat window, while Kimi splits it across separate tools. Every Claude plan, Free included, can create and edit files with code execution. Anthropic contradicts itself on Claude Slides, Claude Docs and Claude Design. Its pricing page lists them from Pro up, while its 16 September release notes say they are available on every plan, including Free. Since 16 September 2026, the old Cowork agent mode has been merging into ordinary Claude chat on Pro and Max. You can now hand over a report or a deck from any conversation.

Moonshot is candid that the Kimi chat window does not produce downloadable Office files. For slides you go to Kimi Slides, and for Word and Excel files you switch to Agent mode. When K3 runs as an agent, it produces editable .pptx, .docx, .xlsx and .pdf files end to end. K2.6 only returns text. Kimi accepts up to 50 files at a time, each up to 100 MB.

Context is the other split. A K2.6 conversation holds about 128,000 tokens before it stops reading new content. Claude's pricing page lists a context window of up to 1 million tokens on every plan, varying by model.

For big parallel jobs, Kimi is the more ambitious tool. Its Agent Swarm can assemble up to 300 sub-agents for one research or batch task. For a finished document from an ordinary chat, Claude is the smoother path.

Coding: Kimi Code vs Claude Code

Both companies bundle a coding agent with their paid plans. Kimi Code is available on every paid Kimi tier, draws on the shared credit pool and has a rolling five-hour limit, plus a weekly one on the legacy plans. Inside Kimi Code you switch to K3.1 Pro with the /model command. Moonshot says it will soon split Kimi Code benefits from membership, so you can buy each separately. Claude Code comes with Pro and Max, runs on the same session and weekly limits as chat, and uses Opus 5.5 by default.

For developers paying per token, the new Kimi changes the maths. These are the list prices per million tokens from each company's API documentation, read on 24 October 2026.

Kimi K3.1 Pro costs exactly what Sonnet 5.5 costs per token, $2 / $10, and scores within a point of it at maximum effort. Artificial Analysis also measures what a full run of its index costs, and there K3.1 Pro is the cheaper top-end option: one index task costs $2.11 on K3.1 Pro, against $5.46 for Sonnet 5.5 at Max and $5.98 for Opus 5.5 at Max. The older K3 is now the poor buy, at $3 / $15 for a score of 43.6, while Opus 5.5 at Low reaches 42.3 for $0.55 a task. At the low end Claude still wins. Claude Haiku 5.5, released on 7 October, costs $0.10 per million input tokens and $0.50 per million output tokens for prompts up to 100,000 tokens, an eighth or less of K2.6's rate, and scores 43.4, within a fifth of a point of K3. K2.6 is also on its way out: Moonshot closes the K2 series to new API users on 31 October 2026 and retires it by the end of December.

Kimi’s case for builders is back to price for performance at the top, plus openness. K3.1 Pro gives you a 1 million token context, cached input at $0.20 per million tokens, and, if Moonshot ships on 4 November, the same weights to run on your own hardware. K3’s weights are already public. For bulk jobs, Haiku 5.5 undercuts K2.6 on price and outscores it by 16 points.

Privacy and Where Your Data Goes

Claude gives you a training switch, and Kimi makes you ask by email. Anthropic's privacy centre says it uses consumer chats from Free, Pro and Max to improve its models only if you choose to allow it. The one exception is a chat flagged for safety review. Incognito chats are never used. If you do allow training, Anthropic keeps that data for up to five years.

Kimi's international service is run by Novascent Private Limited, according to Moonshot's privacy policy, last updated 13 August 2026. The policy says it processes your prompts, files and other content to provide the service and to train and optimise its models. It also allows for storing your data on servers outside your country. It describes no settings switch for opting out of training. Instead, its terms of service let you opt out by emailing [email protected], and the opt-out applies only to future training, not to content already used. Moonshot's separate policy for its China service, run by Beijing Moonshot Technology, does let users ask customer service to stop training on their content.

For anything sensitive, use Claude with training switched off, or an Incognito chat. With Kimi, the private route is to run the open weights on hardware you control, so nothing leaves your building.

Kimi and Claude on a Mac

Both companies ship real desktop apps, and Claude's runs on more Macs. Anthropic's Claude desktop app needs macOS 11 Big Sur or later, and its macOS download is a universal build, so it runs on Intel and Apple silicon. Agent work in the desktop app, formerly Cowork, needs a paid plan.

Kimi's desktop client runs on Mac and Windows, and on a Mac it needs Apple silicon and macOS 12 or later, according to Moonshot's help centre. It has two modes. Chat is the normal assistant. Work is a local agent, launched on 3 June 2026 and still labelled beta, that can use your browser, organise files and produce documents on your machine. By default it asks before modifying files or running code, and you can loosen that to fully automatic.

Neither official app is in the Mac App Store, so download them from claude.com and kimi.com. A Mac App Store search for either name turns up third-party apps from other developers, so do not install the first result.

Which One Should You Pick

Pick Claude if you want one assistant for writing, questions, documents and long files. Pro at $20 gives you Opus 5.5, the strongest model in this comparison at maximum effort, a usage limit instead of a credit meter, your chats out of training if you say so, and an app that works on Intel Macs.

Pick Kimi if you want a near-frontier model for coding agents at a lower price per task, open weights, or an agent that fans a big research task out across hundreds of sub-agents. If you are weighing a third option, we compare Moonshot's assistant with OpenAI's in Kimi vs ChatGPT, and Anthropic's with its other Chinese rival in DeepSeek vs Claude. To weigh Kimi against that other Chinese rival directly, see Kimi vs DeepSeek.

Or use Kimi and Claude without choosing

Fello AI puts Kimi and Claude side by side in one native app, next to GPT, Gemini, Grok and DeepSeek. Send the same question to both and keep the better answer. It runs on Mac, iPhone and iPad, has a free tier, and its paid plan is $9.99 a month, less than either company's entry plan.

The Verdict

Claude still wins for most people, by a narrower margin.

Raw model strength no longer decides it. Kimi K3.1 Pro scores 55.1, above Opus 5.5 at Medium and only 2.5 points below Opus 5.5 at Max. What tips it to Claude is everything around the model. Claude lets you keep your chats out of training, ordinary chat does not spend credits, its Mac app runs on Intel, and Anthropic says plainly which models each plan gets. Claude opens on Sonnet 5.5, so make the switch to Opus for hard questions.

Kimi wins for builders. K3.1 Pro matches Sonnet 5.5’s token price, costs less per index task than either Claude flagship at Max, and tops Terminal-Bench 4.0. Its swarm agent takes on bigger parallel jobs, and its weights are downloadable, with K3.1 Pro’s promised for 4 November. Claude Haiku 5.5 still undercuts Kimi for bulk work. If you chat, get Claude Pro. If you build, test Kimi K3.1 Pro on the API against Sonnet 5.5 before you commit.

Frequently Asked Questions